Portable mold.



Patented March 28, 1905.

PATENT OFFICE- JOHN T. BONER, OF NAPOLEON, OHIO.

PORTABLE MOLD.

SPECIFICATION forming part of' Letters Patent NO. 785,705, dated March28, 1905.

Application flied May 25, 1904. Serial No. 209,788.

To a/ZZ whom, t may concern:

Be it known that I, JOHN T. BONER, a citizen of the United States,residing at Napoleon, in

the county of Henry and State of Ohio, havey invented a new and usefulImproved Portable Mold, of which the following is a specification.

This invention relates to an improved portable mold, particularlydesigned for use in manufacturing sections of pipe for sewers, drains,culverts, and the like.

The object of the invention is to provide a simple, inexpensive, andefcient device of this character which may be readily transported fromplace to place and quickly set up for use when the occasion requires.

A further object of the invention is to provide a mold comprising anouter sectional shell or jacket, an inner sectional core, and means forlocking the core in position while the mold is being filled.

The invention consists in the construction and novel combination andarrangement of parts, hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended, itbeing understood that various changes in form, proportion, and minordetails of construction may be resorted to without departing from theprinciple or sacrificing any of the advantages of this invention.

In the accompanying drawings, forming a part of this' specification,Figure 1 is a longitudinal sectional view of a mold constructed inaccordance with my invention. Fig. 2 is a top plan view. Fig. 8 is aview showing the outer shell released. Fig. 4 is a perspective view ofthe sectional core detached.

' Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

The device consists of an outer jacket 01 shell 5 and an inner sectionalcore `6. The outer shell which may be formed of wood or other suitablematerial, is preferably formed in two semicircular sections 7 and 8,hinged together, as indicated at 9, said sections being provided with ametallic lining 10, so as to present a smooth surface to the cement orother material to be molded and prevent the latter from injuring saidmold. The free end of the hinged section 7 is provided with one or moredowel-pins 1l, which engage corresponding recesses or sockets 12, formedin the adjacent face of the section 8, said sections being locked inclosed position by means of hooks 18 engaging eyes 14, as shown.

Arranged within the outer shell 5 is theremovable core member-6, thesemicircular sections 16 17 of which are spaced apart and have theircontiguous faces inclined or beveled, as indicated at 18, to formwedge-shaped openings 19. The inclined faces 18 of the core members areprovided with longitudinal grooves 20, adapted to receive thelaterallyextending tongues 21 of removable wedgeshaped slides or keys22, which [it within the openings 19 when the core is in position foruse and form a continuation of the walls thereof. The sections 16 and 17are preferably formed of wood covered by a metal casing 23, each sectionbeing provided with oppositelydisposed heads 24, the central portion ofwhich is recessed, as indicated at 25, so as to permit ready access tothe interior of the core. As an additional. means for fastening thecoresections together after the slides or keys 22 are in position Iprovide one or more hooks 26, fastened to the inner wall of one sectionand engaging corresponding eyes secured to the inner wall of theopposite section.

The keys or slides 22 are preferably pro-' ing first been inserted inthe openings 19 and 90 ment has thoroughly set the core may be removedby unfastening the hooks 26 and withdrawing the keys or slides, therebypermitting the two sections of the core to be drawn IOO together andlifted from the mold. By unfastening the hooks on the shell 5 the twosections of said shell may be swung rearwardly on their pivotalconnections, thereby completely detaching the product from the mold andpermitting the latter to be reset for a new section of pipe.

While I preferably make the two sections comprising the mold oi' woodand provide each section with a metallic lining', it is obvious thatsaid mold-sections may be formed of metal, in which event the liningsmay be dispensed with.

Having thus described the invention, what is claimed is* l. In arnold,an outer shell or jacket formed in two sections hinged together andadapted to swing laterally to open position, an inner removable coremember comprising a plurality of hollow detachable sections, a pluralityof wedge-shaped keys or slides connecting the latter sections, means forfastening the outer shell or jacket, and an auxiliary fastening meansarranged within the hollow core-sections for connecting said sections.

2. In a mold, an outer shell or jacket formed in two sections hingedtogether, a metallic casing surrounding the inner walls of said shell,an inner removable core member comprising a pair of detachable sectionshaving their adjacent edges grooved or recessed, wedge-shaped keys orslides provided with corresponding tongues adapted to engage saidgrooves or recesses, a metallic casing surrounding the outer walls ofthe core member, and means for fastening' the sections comprising theouter shell or jacket.

In testimony that I claim the foregoing as my own I have hereto aiixedmy signature in the presence of two witnesses.

JOHN T. BONER.

Witnesses:

THOMAS MULCAHY, MADGE YEAGER.

